Mosquito Creek Reservoir in Trumbull County, Ohio, USA. The town of Cortland, Ohio is immediately to the right of the picture. Mosquito Creek State Park completely surrounds the lake. View is upstream to the north. Ohio State Route 5 is just visible in the lower right-hand corner. Ohio State Route 88 bridges the reservoir in the far distance.
Mosquito Creek Reservoir in Trumbull County, Ohio, USA. The town of Cortland, Ohio is immediately to the right of the picture. Mosquito Creek State Park completely surrounds the lake. View is upstream to the north. Ohio State Route 5 is just visible in the lower right-hand corner. Ohio State Route 88 bridges the reservoir in the far distance. Margaret Luzier, U.S. Army Corps of Engineers · Public domain

Mosquito Lake State Park

State Park · Ohio · Ohio Department of Natural Resources

Mosquito Lake State Park covers 10,333 acres in Cortland, Ohio, in the care of the Ohio Department of Natural Resources. Of that total, 2,483 acres are land and 7,850 acres are water, most of it the reservoir known as Mosquito Lake. The park describes Mosquito Lake as one of the largest lakes in Ohio, with over 7,000 acres of surface area. That balance of land and open water shapes the place: it is built around the lake first, with woodland trails, campgrounds, and shoreline access wrapped around it.

This is a park for boaters, anglers, and campers as much as for hikers. The scale of the water supports unlimited-horsepower boating in season and steady fishing for walleye, bass, crappie, and northern pike, while the land side offers a modest network of named trails, a campground with lakeshore and shaded sites, and set-aside spaces like a dog park and a disc golf course. Visitors looking for a big Midwestern reservoir with the infrastructure to use it heavily will find more here than those seeking a quiet backcountry hike.

Plan your visit

Trails

7 named routes 14.38 mi of walkable ways mapped within 2 km

  • 3.31 Cherokee Trail
  • 2.66 Mane Trail
  • 2.02 Turkey Run Trail
  • 1.18 West Side Trail
  • 0.41 Ivy Trail
  • 0.32 Lucky Trail
  • 0.29 Sidekick Trail

Camping & lodging

10 mapped camping locations

Site types & reservations: see the official site.

Know before you go

Address
1439 State Route 305, Cortland, OH, 44410
Phone
(330) 637-2856
Official site
ohiodnr.gov
Managed by
Ohio Department of Natural Resources
Hours
6am to 11pm daily. Visitors are permitted to actively engage in legitimate recreational activities outside these hours. If you have questions, call the park office.

Getting there

1439 State Route 305, Cortland, OH, 44410

Directions on Google Maps →

On the ground

The park sits in Bazetta and Mecca townships in the center of Trumbull County. The Connecticut Land Company offered the 17,247-acre Bazetta Township tract for sale in 1795, dividing it into 100 parcels for early pioneers, and the first settlers arrived in 1805, clearing land and building log houses in what was then wilderness shared with deer, turkey, bears, and wolves. Samuel Bacon moved to Bazetta Township in 1816 and his family operated a sawmill there until 1850, part of the early development of the community that grew up around the lake's future site. Historic features noted in the park today include the Dam/Spillway and the USACE Dam Tower, reminders that the lake itself is an engineered reservoir rather than a natural one.

Woodlands around the park are beech-maple forest that has regrown since Ohio's original forest cover, and in spring the understory supports spring beauties, anemones, Dutchman's breeches, and purple cresses. The Cherokee Trail runs 3.31 miles, the longest named route mapped near the park, and the Mane Trail and Turkey Run Trail also thread the park's woods and shoreline. Boating is allowed with unlimited horsepower on portions of the 7,850-acre lake, though skiing, tubing, and personal watercraft are prohibited north of the State Route 88 causeway. Five launch ramps give access to the water, including the Main Launch Ramp reached from the State Route 305 entrance. Anglers fish year-round for walleye, bass, crappie, and northern pike. A 600-foot beach serves swimmers, with a separate swim area set aside for dogs, and the nearby Cooperation Station Dog Park is a 5-acre off-leash area with a split wood and mesh fence and separate sections for small and large dogs. Families with children can walk the park's Storybook Trail, a half-mile route that presents a children's story in segments along the way, and the Squirrel Run Disc Golf Course offers 18 holes, open every day year-round with no fee to play.

Practical notes

Park hours run 6am to 11pm daily, and questions can be directed to the park office at (330) 637-2856. The park address is 1439 State Route 305, Cortland, OH, 44410.

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Sources: State agency, Wikimedia Commons / editorial, OpenStreetMap contributors · updated 2026-08-23